a sharply creased narrow pleat, usually one of a series folded in the same direction.
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Origin of knife pleat
First recorded in 1890–95
Words nearby knife pleat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for knife pleat
a single pleat turned in one direction
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012